Large-angular separation of particles induced by cascaded deflection angles in optical sorting

被引：5

作者：

Yuan, X. -C. ^{[1
]}

Zhu, S. W. ^{[2
]}

Bu, J. ^{[1
]}

Sun, Y. Y. ^{[3
]}

Lin, J. ^{[3
]}

Gao, Bruce Z. ^{[4
,5
]}

机构：

[1] Nankai Univ, Minist Educ China, Key Lab Optoelect Informat Sci & Technol, Inst Modern Opt, Tianjin 300071, Peoples R China

[2] Tianjin Union Med Ctr, Tianjin 300121, Peoples R China

[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

[4] Clemson Univ, Dept Bioengn, Clemson, SC 29634 USA

[5] Clemson Univ, Ctr Opt Mat Sci & Engn Technol, Clemson, SC 29634 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 26期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

microfluidics; microlenses; optical lattices; radiation pressure; refractive index;

D O I：

10.1063/1.3040697

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A composite microlens array (MLA) with two cascaded guiding axes has been fabricated to achieve a large lateral separation of an object with different refractive indices or sizes. The MLA projects a composite pattern formed by its focal spots into a microchamber for optical sorting in a microscopic system. This approach enables passive, high power, efficient, and continuous microfluidic sorting without requiring complicated optical assembly. Separation of particles with different refractive indices to a lateral angle of 40 degrees is experimentally demonstrated with moderate laser power.

引用

页数：3

共 15 条

[1] OBSERVATION OF A SINGLE-BEAM GRADIENT FORCE OPTICAL TRAP FOR DIELECTRIC PARTICLES [J].

ASHKIN, A ;

DZIEDZIC, JM ;

BJORKHOLM, JE ;

CHU, S .

OPTICS LETTERS, 1986, 11 (05) :288-290

[2] THE MANUFACTURE OF MICROLENSES BY MELTING PHOTORESIST [J].

DALY, D ;

STEVENS, RF ;

HUTLEY, MC ;

DAVIES, N .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1990, 1 (08) :759-766

[3] Optical tweezers applied to a microfluidic system [J].

Enger, J ;

Goksör, M ;

Ramser, K ;

Hagberg, P ;

Hanstorp, D .

LAB ON A CHIP, 2004, 4 (03) :196-200

[4] A microfabricated fluorescence-activated cell sorter [J].

Fu, AY ;

Spence, C ;

Scherer, A ;

Arnold, FH ;

Quake, SR .

NATURE BIOTECHNOLOGY, 1999, 17 (11) :1109-1111

[5] Optical vortex trapping of particles [J].

Gahagan, KT ;

Swartzlander, GA .

OPTICS LETTERS, 1996, 21 (11) :827-829

[6] Kinetically locked-in colloidal transport in an array of optical tweezers [J].

Korda, PT ;

Taylor, MB ;

Grier, DG .

PHYSICAL REVIEW LETTERS, 2002, 89 (12) :128301-128301

[7] Sorting mesoscopic objects with periodic potential landscapes: Optical fractionation [J].

Ladavac, K ;

Kasza, K ;

Grier, DG .

PHYSICAL REVIEW E, 2004, 70 (01) :4

[8] Microoptomechanical pumps assembled and driven by holographic optical vortex arrays [J].

Ladavac, K ;

Grier, DG .

OPTICS EXPRESS, 2004, 12 (06) :1144-1149

[9] Laser-guidance based detection of cells with single-gene modification [J].

Ma, Zhen ;

Burg, Karen J. L. ;

Wei, Yanzhang ;

Yuan, X. -C. ;

Peng, Xiang ;

Gao, Bruce Z. .

APPLIED PHYSICS LETTERS, 2008, 92 (21)

[10] Microfluidic sorting in an optical lattice [J].

MacDonald, MP ;

Spalding, GC ;

Dholakia, K .

NATURE, 2003, 426 (6965) :421-424

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